Apparatus for molding.



No. 892,142. PATENTED JUNE 80, 1905. P. DUPONT.

APPARATUS FOR MOLDING.

APPLIUATION FILED MAY 18.1905

4 SHEETS-SHEET 1 I 5; 7 7/! we ATTOR/VEYJ,

No, 892,142. PATENTED JUNE 30. 1908.

P. DUPONT.

APPARATUS FOR MOLDING.

APPLICATION FILED 14 1s 1 5.

I M SHEETS-SHEBT 2.

- By 912; Z%D%MWW ATTORNEYS 110.892,].4? PATBNTED JUNE so, 1908. P.DUPONT.

APPARATUS FOR MOLDING.

APYLIOATION rum) mu 18,1905.

4 sums-sum 3.

Iau Z Dal Win25,

z? 'myb ATTORNEYJ No. 892,142. PATENTED JUNE 80, 19%.

v P. DUPONT.

APPARATUS FOR MOLDING.

* mums-mam- 4.

APPLICATION IILED KAY 18, 1905.

WITNESSES.-

. 5i hw/Vr LE GATEAU, FRANCE.

APPARATUS LEGFEL I IDLDIN g'lpecificotioii of filo-atom; Patent.

Pia-"booted (one 8-0. 1963.

To all whom it m (by concern:

Be it known that 1, Run, DUPONT, a oiiti of the Republic of France, residing at Lo Comm, Noni, in the Republic of Franco, have invented certain new and useful 1mprovemonts in Apparatus for Molding, of which the following is a dosoi-i ption.

My invention leiaztesio an op aratus for molding, the some being ospooiaiiy (iosignea'i for'use in casting hoilow articles oi largo dimensions, such as both tubs, basins and tho like.

The objectof my invention is the provioion of means'for molding sand in o wzijr secure uniform compression thoroof upon "(he respoctive sides of a pat-tom.

My apparatus obviaios the nocessity for lubricating or shaking the mom, which oonstitutos one oi the, defoois of moidiiw by hand. and requii'es o oonsidombio amount of time for its poi'fm'nmnoo. Furihormoro, Lho apparatus may be operated by an unskiiled workman, thus securing economy in the hr bor employed.

Accoiflding to one port of my invention, I employ a two-part flask, a pattern confined betweon the ports of the Flash, and a UOIX1- pressoz' o1 rmnmer whip bed L0 enter one art of the flask and to cooperate with one six the pattern in molding & body of sand, or the matrix of a mold. This compressor is of novel construction. fol" the ourposcof distributing the sand at on omriy period in iii-e application of the pressure, and for oompressing the sand at the last amigo of o tossing operation. Said vonvwossor is Fooko-d to one part of tho flask at U and oi the step of compressing the sand, mid it mains attached to said port of the ihssi; (hi ing the subsequent operations of n'iolding; saqid iii the other part of the flask and of tho use of the flask in the casting operations.

' body of sami,

Another part of the invention consists in the employment of o hooking for the pa; em during tho first opomi ion of (IORLPTPSSix iho sand. This booking prevents the pot-win fiom bonding under tho pressure applied thereto and to the Sand, and it is removed from the flask and the aitem prior to tho stop of inverting the flash.

Another port of the invention consists ii: i

the combination of the his and a li'mio (-1 second) conimessm' for oompiessmg second (01. the patina) m onothor port of 'the flask and against the other side tho pattern, and means for lockin the sec 'toifposod it oomprez-zsor to the List named part of the Hawk so Limit the second compressor remains devious :i'o'r io mg the two parts of the Hush either directly o0 Boon other, 0 with an innm or for locking the potion: Rho? parts of the Hush.

U101 consists in the com-- (ii-i013 of poms o3 wiil he and claimed.

- UGOXHQJLHY- spooificm once are ports in all to one or the The inventhm fu' inflation and (:OIEL ,1;

hominai'ioi Reference is -04,: hori =i-o ho .i'zig rjhiiwings for-iii z; m of b Lion, whomin like or ,i'iiouzi's oi' usod 5o indiooio cormrspondiog tho figures.

Figures 1, and timmgjgh my Inohog apparatus in f) we sooi ionoi views 0 pom'twe stoiatiou to {L 3 now duo-root stages 0% provoss oi the \v 1; oi moiomg the sand in tho cope of tho h i is a soctionzii inverted po oiovoiimn through. no L sition 'io bring tho dri 3): most preliminary to molding miothoi ho; v of sand in the has-sip Fig. ir o sootioiml ohavation similar 4:, showing; the so omi body of sand or 1 mix molded onto 1 a lllfiiCGOIIIQTQSSOI' and iho pmtean. Fig. (i sectional elevaon showing tho ireiiu'iinm v 1 in) cope. tho iiosk wiih opomiiion of opening the,

Tammi of the potraooiionoi olem1 removed 1 ready for Mons Vii-3W the flask with suitohh, guide with relation :i eiotiiil perspecr or potion; 2 11. pied for use interchongoooly Wiih the pouring gate. Figs. 2! to 19 inclusive, iihis ate detail secfimnal inclusive.

vided with perforations, adapted to register views through parts of the flask and the pat- I tern showing ifi'erent adjustments of devices for locking the members of the flask and :the pattern as required in the several stages of the molding operation.

The flask which I employ is in two arts,

'' consisting of a cope A, and a drag B. hese parts are suitably constructed for the accommodatioil of a pattern C, and they are adapted to be assem led in matching or registering relation when the pattern is withdrawn, in

, order that they may be locked or fastened di- J rectly together.- The attern-C conforms to the object which is to e cast in the flask of the molding ap aratus, and as shown, this pattern is provi ed with a marginal flange 0,

)- arranged to fit between the meeting edges of thecope and the drag when'the flask is assembled in the position shown by Figs. 1 to 4 Sai flange of the pattern is rowith erforations in lugs a, b," of the cope and the rag A, B, respectively, whereby the parts may-be locked or held together by means of the bolts D, see Figs. 15 to 19 inclusive. As shown'by Fig 15, the bolt is rovided with a nut d at one end and witha key (1 for the purpose of locking the attern C to one part of the flask, but this orm of bolt may be changed in the construction shown by Figs. 16 to 19, wherein the bolt D is constructed to receivethe keys d, (Z and a pin (1". This bolt D is adapted .to' pass through the lugs of the two parts. of the flask, and apin (Z separates the flange of the attern from the lug of the drag B, thereby ocking the-pattern in a fixed position between the two parts of the flask and also looking said ;parts of the flask to eachotheru 'In Fig. 17 the cope A of the flask and the pattern C are held firmly together by a bolt D and wedges The samelgarts are shown by Fig. 18,

wherein the bolt is used to fasten the pat- 19 the bolt D fastens the two parts s press is represented b Figs. 1, 2 and 3,

do {as a hydraulic press, the p unger f of which is adapted to work in the cyhnder f press, is e uipped with a head f which is .'The

connected y rods or members f with a stationary part of the press structure. The

seams molding the sand therein, and for this purpose I provide the co e A of said'flask with trunnions a, and emplby means for suspending said flask below the head of the press. As one means for suspending the flask, or the cope thereof, I may employ a suspension bar G, and suitable links or stlrrupsg, the latter being adapted for engagement with the trunnion" a. These links or stirru s are connected with the suspension bar and this bar is operated by a rope or cable y connected. with the middle portion thereof, said rope or cable being adapted to be coiled on a Windlass or other operating device.

The sus ension evice is also adapted for use in hol ing a compressor H in a firm ositioneagainst the under side of the press cad f Said compressor consists of a frame h, a perforated top late It, a lurality of ribs 7);, and a suitable illing 7L3. he frame h of the compressor is of such shape and pro ortions I as to fit snugly within the cope A of t eflask, and this frame is provided at its lower edge with a bevel h", thus providing a sharpened lower edge of the compressor frame-for the san in the cope A uring the operationof assemblin the flask and the "compressor. The top plate h of said compressor is joined in asuitable way to the frame it, and it is provided with numerous openings for the escape of gases during the casting operation.

The filling 7L3, may be of concrete, or any other appropriate material, and this filling occupies thecorners of the compressor, the

under face of the filling being inclined or concaved' and presenting a Working surface which conforms to certain portions of the pattern C. The ribs h are provided within the compressor H, and they extend longitudinally and transversely of said compressor,

said ribs extending beyond the concave face of the filling F1 These ribs strengthen the compressor, and they operate to prevent dispiacementlof the sand duri, the operation ofcompressing' the same etween the 1 pattern and the compressor H. The topplate h of said compressor is provided wit openings i i, the same being larger than the perforations in said top plate. The openingsi are intended to receive the gate fOIHh ers or patterns J during the operation of molding the sand in the cope oft e fi: sk, for the purpose of forming the gates in themolded body of sand, after WhlCh the ates are removed so that they may be rep aced by the pouring gates I and the vent One pouring etc or vent is shown in detail in ig. 13, rom which it will be'seen that said purpose of making it ass easily through the versed at certain stages in the operation of jconstru'ct'ion of the press is not a; material 6;) part of this invention, and I may use any i suitable means for exerting pressure upon -the parts of the molding1 apparatus for the ressing t e sandin the flask.

apted to be inverted or redevice is provided with a flange '5 adapted '126 to rest on the plate 72/ of the compressor. Each pouring gate I and the vent 'I' is provided with transverse openings 1?, and said ates and vent are arra ed for the openi s V cite register with similar openings in t e :180

- urpose of com The flask is a m stiifen and strengthen it some;

ressor, thus o ends of the frame it of the corn permitting a rod 5 to be passer through compressor frame, the gates and the vent aiter'the sand is molded by compressing it between the pattern and the compressor H.

it), may be used for locking the Compressor to the cope and for locking the pouring gates and the vent in position on said com ressor. Said rod is'adapted to pass through t 1e comressor above the plate h, and is adapted also to fit in notches j, provided in the top edge ofthe cope A when the compressor is forced into the cope as in Fi 3. it will be seen that the suspension ror J extends beyond'the flask, and this rod is adapted to be engaged by the links or stirru )8 g, whereby the com ressor may be held n'mly in placeagainst t 1e underside of the press head It will be noted that the pattern is confined at its edge portion between the parts of the flask, that part of the pattern which projects into the cope being unsupportec at )oints intermediate of its length and width. he operation of molding the sand upon and. around a pattern of large dimensions, subjects the unsupported part of the attern to considerable )ressure. it is foun that the pattern will bend under this pressure", particularly when molding the sand between the compressor H and the pattern which extends To effectually overcome and to materially within the flask, I employ a reinforcing; device represented in detail by Fig. 9, and in its working position by Figs. 1, 2 and 3. Said device consists of a skeletonized frame K, comprising a base is, a series of longitudinal members is, and a plurality of transverse members is", said members being attached to the base is in any suitable way. The members if" it", are

into the cope. bending of the pattern,

- curved. or fashioned to produce a reinforcing ported parts of device, the profile of which corresponds to the interior contour of the pattern (I. The base of this reinforcing device is adapted to rest on the tru ch E, and the members of said device fit in to the pattern for the purpose of having engagement with said pattern at numerous lines transversely thereof, where-- by the reii sloreing deviccis made to serve the purpose of a brake or stay for the unsupthe pattern, and any tendency of the pattern to bend or buckle is "eil'ectuall overcome when the sand is subjected to compression between said com ressor if and the pattern.

in the operation of nmlding sand in the cope A of the flash, the compressor is susended against the under side of the press head by the links g, engaging with the rod J. The flash with the pattern attached thereto is placed on. the truck, the reinforcing device K be ng within the pattern 0, and. the parts are run upon the platform f. For the nupose of centering the true and. the flask. within the press, 1 provide a detont K. the same consisting of a plate or block which )ivoted at k to the true-la E, said. detent eing foldable on the truck to the dotted line osition shown by Fig. S, but when said detent is unfolded it is adapted to engage with one of the rods f of the press, whereby the truck is guided by 'the detent sliding against the press rod on the risennd fall of the mass platform. After the compressor shali have, been suspended, and the truck with its load )laoed in the required position, the press plat orm lifts the flask and the pattern thus enabling the compressor to be cen tered accurately with respect to the flask. The flask and platform are now lowered, and the cope A is filled or charged lightly with ordinary molding sand, the sand being filled to the level of the cope and resting upon one side of the pattern. The platform and flash are again raised and the lower part of the compressor frame 7: is made to en tor the upper .art of the cope A. Vl hcn the compressor frame enters the cope to the depth indicated by Fig. 2, the edge 71: of said frame operates on the sand for the purpose of dis lacing it laterally with respect to the walfs of the flask, and at this stage in the operation of molding the sand, it is uniformly distributed over the pattern without, however, subjecting the san( to sufficient pressure to compress it to the required density. ()n the continued upward movement of the flask and pattern, the com )ressor is forced entirely within the cope, su stantially to the position shown by Fig. 3, and this operation compresses the sand uniformly between the pattern and the under side of the compressor ll. it will be understood that the compressing force only takes place during the last few centimeters of the upward movement of the flask, at whiph time the compressor is embedded into the sand. 'lhe first and long part of the upward movement of the flask makes the compressor cooperate with said flask exclusively m securing an even distribution of the sand,

thus putting the sand in a good condition to be comprossed'at the last part of the movement of said flask. While the flask and platformf are in their raised positions, the compressor H is locked to the cope A by means of suitable pins or rods ll, which are thrust transversely through suitable openings in the frame of the compressor and the sides of the cope, as indicated by Figs. 4, 5, 6, and 7 of the drawings. The stirrups g are now disengaged from the suspension rod J, the suspension bar G is lowered, and the stirrups are connected with'the trunnions dot the forcing frame K are now lowered away fromflask. The platform, truck E. and the reinthe flask, which remains in a she ended position below the press head, an the bar G with the link are now lowered sufficiently to move the ask below the press head, for the purpose of inverting or reversing the position of the flask. The flask having been inverted o1 turned upside down to the position of Fig. 4, it is deposited upon the truck E, and the stirrups g are disengaged from the trunnions a, thus position of Fig 4, w ereinthe drag B is uppermost.

The apparatus is now in position for molding the sand against the other side of the pattenrand withln the drag B, butbefore pro 'ceding to deposit the sand in' the inverted mold of Figs- 4 and 5, I first place a second or male compressor L in position on the.un-

der side'of the press head f said compressor .being held in place by the rod J, whichis connected with the suspension bar G by the we ge shapedbo'dy ortion, e, the

stirrups g. This male compressor is shown in detail by Figs. l1 and 12 of the drawings, which represent the said compressor as becast in a sin le piece of metal. This compressor is con' orm orfrusto-pyramidal in sha e, that is to say, it has a tapering or atter bemg provided with a ange, e, see Figs. 7 and t n has transverse openings n at the sides of.

the same manner which 12. The .wedge shaped part of said compressor has numerous perforations as indi cated at m, and within the hollow comressor is a plurality of strengthening webs or v anges a. From the-flange, e, of the compressor, L, extends another flange, n, see

igs. 7, 11 and 12, and in the portions of said fiangey/L, at the ends of'said compressor are the openings, n, see Fig. 11, and said flange the compressor. Through the openings n" is adapted to pass the suspension rod J, and this rod is adapted to hold said compressor Lagainst the under side of the press head in the compressor H was held by the same rod.

Having invertedthe flask, and placed the compressor L in position, the tru and the flask arefrun upon the latforrn j, which is raised so as to proper y' center the com ressor L withrespect to the drag B- The eek is now lowered, and charged or filled with sand, the latter rastir'ig' loosely against 'the pattern and filling the cope to the level of it's top ed e.- The platform is now raised so as "to" ma e the'cornpressor L enter the drag, and said compressor acts on the sand for the pu of compressing the sand between itsel and tha -flipper side of the inverted pattern, as represented by Fig. 5. The corn ressoris -locked to the drag b pass ing' suitable locking pins N, through t e per forations n in thesides lacing the flask. in the of. the compressor and suitable openings in the sides of the drag, see Figs. 6, 7 and 8. With the'cbmpress'ors H and L locked to the cope and drag A B of the fiaslg'as indicated by Fig. 5,

pattern with said cope. The parts aren'ow .struck lightly so as to loosen the molded bbdy of sand, or patrix, from the hollow/side of the pattern, and-the'platform is lowered so'as to withdraw the truck, the drag and the molded sand resting on the compressor L from the pattern and cope, these last mentioned parts remaining suspended as indi- 'cated by- Fig. 6. The truclrE and itszload are now wheeled out of position, and another truck is run into place and lifted qniteclose to the pattern C. The atternisnow struck lightly and it is unloc ed horn the copke, their-coy depositing the pattern upon 35 e truck, and eav'in izhe cope,

its load are now platform is raised to bring the two molded odies of sandinto registration one with the other, sribstantially as shown by Fig. 7, ai ter which the parts A, B,=of the flask are locked together by the bolts D, as indicated by Fig? 19. After having molded the sand between thecompressor H and the pattern C, as shown by Fig. 3, and after the flask shall have been lowered previous to inverting the sti-irnps are con are now manipn' from the pattern in the cope, and to connect the flange oi the the compressor H and the molded sand sus ended, as shown 'byFi'g. 6. The truck E and replaced below the suspended cope, and the same, the upper part of the cope A becomes 7 accessible so that the temporary gate formers or patterns J may be removed. [These parts are replaced by the pouring gates I and the vent 1, shown in Fig. 13', the same hav 'ing the shape of the openings left in the sand by the gate formers or patterns. The sand is built up by hand around the holes up to the level of the upper edge of the compressor H. Air holes are pricked in the sand by means of a molders needle, which is introduced through the holes of the perforated plate h of the compressor H, said holes forrnlng vent openin s through the sand and the compressor for the gases during the casting of the metal. The same operation of nakiri vents in the sand of the patrix is performed after the sand ,shall have been molded between one side of the pattern and the cone .pressor L, by thrusting a'molders needle 1gp prepared the two Iilfibo through the perforations m pressor L.

In the operation moldin r the drag, as shown by In to exercise care in renio 1.1 I prints which ere provided on A and to replace them b nimble row will rovide the neces s1 (luction of bolts that serve to i of the cast metal bath tu o; I

soml, nnil assemis only uecci 'iL iilG gol es i, as

wot is me uch holes or the intro- "cot leclthein as in Fig. 7, pour in the metal ililfi the ordinary practice.

Having thus d What I claim es in Letters Patent 1:1.

1. in e molding; pressor, means for i reniovooly on the i part flask, apa'ttein. iulnpzeil lac he licidwitliin said flask end to be connected to the incl vidual parts thereof, and moons for l 'movement to the Hush,

., Frame, a.

if 1113M;

ls bo l" orei'tlier pert ll. e relative to the conqiressoi:

2. In a molding nuicliino, :1. frame, a versible two-port flesh, a pattern, moons locking'said pattern to either port, or boih arts, of said flask, a compressor, and moons for removably sup porting the compr ssor on said frame in a. position to enter the mask.

3. In ainolding machine, the combination of a flask, a pattern, e romnier o compressor arranged to enter the 'llosk and to cooperate with the pattern, and menus for locking the Ta'mmer or compressor the flask.

4. In a molding meal the combination of a flask, a pattern therein, a. wmpressor, rpeans adapted to suspend :whe compressor in a fixed position and in the path of the flask, and means for locking the compressor to the flask subseiuont "to the cmnpression of sand between he pollen; and the con1- pressor.

. 5. In a molding machine. sne couihinetion of a. reversible two cert flask, a pattern held in and reversible witn the ilLSli., 1*. support for interchangeable com ressors, mczms on Support for holding Qlic individual com ors in cooperative rqlzition to the scperetc parts of the flask, and means l'or locking the separate Compressors to ilw respective of the flask.

6. In a molding nnichinc c. llssl', ll, pat tern, a, male compressor having 11. substantially wedge-shaped holly adopted to co 0 erate with a hollow sil o oi the pofitcrn to distribute the send over the pattern, and thereaftercompress the ssml against the pattern, and means for locking; said cone pressor to the flask. subsequent to the co1npression of the sand.

'7. In a molding machine, :1 flask, o z, tern, & male compressor having so o; tially Wedge-shaped body all to so i Qero,

m t 1e send over, and compress the sand zinst the pattern, i'neans for snpportin compressor in the path oi the flask, on

' or looking the con'ipi'essor to said .-1. .9}. in e molding meclune, scompiessoi comprising; cv hollow casing having e filling p wentlng" :1 concave pressure surface, en' inecrnn-l ribs extending beyond said surface.

9. in n. molding machine, a flask, a compressor with an open side embodying 0. frame lowing o beveled lower edge, and a concave pressure surface confined within said frame and above the beveled thereof, said u: surface being ecleptedito enter said xwslc well below the upper edge thereof so as to o e ate to exert lateral pressure upon send coniimid wiiliin the llnsk.

10. in n. molding machine, e. compressor oviilcii with e concave pressure surface, es extending beyond said rcssure surface 1' retaining the sand in p ace (luring the casting operation, and suitable getelormers iii-\iopen lcntoi the pattern to be molded and extending through one of the Wells or? the compressor.

11. in a molding machine, the GOIYlblZU-flr tion of a compressor, gate formers fitted relllovllbly thereto, and e suspension rod for the compressor, said rod locking the gate formers co the compressor.

ll. 111 molding machine, the combination of a notched ilnsli, a compressor adapted i-o enter the flask, and a suspension rod connected reniovebly to the compressor and adopted to occupy the notches of the flask.

In molding machine, the combinetion with 1i press, of a compressor, e suspcm sion device adapted to hold the compressorin the press, and e lash adopted to be raised by the press to receive the compressor; said suspension device being adopted for engagement with the flask to suspend the some for inversion in the press.

14. In a molding machine, the combinetion s. ewe-port llask, a pattern therein, a. i-oi'npressoi adopted to cooperate with one side of the pattern, means for looking the compressor to one part of the flask, menus for suspending the flask, whereby the i1 osl; with the pat-tern and compressor may he inverted, another (mniprossor adopted lo coo1j eratc with the other side oi the pattern, and means for locking the second. named compressor to the Oillcl port of the flask.

111 a molding n'incliine, s tw0psrt reversible flask, a. PfiHQIll adapted to be held between the ports of said flask, and means wliereoy'the pattern may be looked either to fiwiiiliflg machine, the combine- Q seams ing devises adapted to fasten the parts of the 17. In a fmoldingmaohine, s cope, e drag,

a pattern, and means for locking said pattern either to the cope or tothe drag, or for looking seidpattern betweenssid cope and drag. 18. In a moldingmachine, a cope, a drag, a pattern, and bolts provided with means for looking the pattern either to the drag or to the cope, or ier holding said pattern between said co e and' dreg. V,

19. n a molding machine, a nope, a drag, a pattern, and bolts adapted, to engage with said pattern, cope and drag,said bolts being provided with keys and. nuts adeptedi'or lock mg the pattern either to the drag or to the cope, and for locking the pattern, the drag and the cope to ether.

20. In a mo ding machine, e reversible two-part fiesk', two compressors, and means for locking said compressors individually: to.

the resective parts of the ilask.

21. a molding machine, a reversible two-part flask, two compressors, means, for

holding the separate compressors in cooperative reletionto the individual parts of the flask, and means for. locking the individual compressors to the respective parts of the part flask, two compressors, means for lochlng one compressor to one part of the flask,

22.- lnemolding machine, a reversible twoand means for locking the other compressor to the other part of the flask.

23. In a molding machine, a com ressor comprisin a hollow casing reinforce by'an internal fi ling, said fillin. presenting a substantially wedge shape pressure surface adapted to distribute .thesand over a pattern Within a flask without compressing the sand against said pattern, and also adapted to compress the sand upon said pattern.

In testimony whereof I have'hereunto signed my name to this specification in the presence of two subscribing-Witnesses.

PAUL DUPONT. Witnesses:

Gnonens BRAUN, GUs'rAvn LEGROUN. 

